压力比

对一种新的测试气动元件流量特性的方法进行了研究，即利用等温容器的放气曲线来测量气动电磁阀的音速流导C和临界压力比b。

This paper studies , a new method for measuring flow rate characteristics of pneumatic solenoid valves , namely measuring sonic conductance C and critical pressure ratio b of pneumatic solenoid valves using discharge pressure curve of isothermal chambers .

测出了不同喷咀比ε的波高比Hi／Ho、压力比ΔPi／Ho和波能转换效率ηA。

The wave height ratio H I / H o , pressure ratio Δ Ρ I / H o and wave energy conversion efficiency η A under different nozzle ratios ε were detected .

A点的压力比B点的压力大两倍。

The pressure at point a is twice greater than that at point b.

在一定的冷凝温度和蒸发温度下，随着混合制冷剂中CO2的质量分数增加，循环单位制冷量和压力比都增大；

And when giving the evaporating temperature and condensing temperature , the increasing mass fraction of CO2 enhance refrigerating output by unit mass refrigerant and compression ratio .

当压缩机和膨胀机的效率一定时，CO2节流阀循环的最佳高压压力比膨胀机循环的高。

When the compressor and the expander efficiencies are given , the optimal heat rejection pressure in the CO_2 throttle valve cycle is greater than that of in the expander cycle .

同时，随着压缩机压力比的增加，其COP急剧下降，排气温度迅速升高，从而导致压缩机不能正常运行甚至损坏。

And with the increase of pressure rate of compressor , the heating COP decreases sharply , and the discharge temperature increases rapidly , which can make compressor dilapidate .

由组件制成了7组件富氧器，这个富氧器在实验室进行了操作，其操作条件，膜两侧压力比（PL/PH）对富氧空气流量及富氧空气中氧含量或分离系数有巨大的影响。

The module was operated in the laboratory . A variety of operating condition , pressure radio ( P_ ( low ) / P_ ( high )) had a great effect on the flux and separation factor or the oxygen concentration of oxygen enrichment air .

多名律师表示，汇丰银行并未解释为何BVI面临的压力比塞舌尔群岛或萨摩亚群岛等地区大。

Lawyers said HSBC had not explained why BVI was coming under more pressure than places such as the Seychelles and Samoa .

在此基础上，分析了影响黄土高边坡稳定性的因素，包括土体的容重γ、粘聚力c、内摩擦角φ、孔隙水压力比γu，地震烈度，边坡坡比和边坡高度H。

The factors , such as volumetric weight , the cohesion , the friction angle , the pore pressure ratio , earthquake intensity , slope ratio and the height of slope , which control and affect the stability of loess high slope were analyzed .

采用较高分离因子的膜和较低的操作压力比，可以得到更高CO2浓度渗透气，有利于对富含CO2的渗透气的后续处理（例如地下埋存）。

The permeate gas with higher CO2 concentration , which is beneficial to the further treatment of the permeate gas rich in CO2 ( for example , geo-sequestration ), can be obtained by adopting membrane with high selectivity and low operating pressure ratio .

里昂证券经纪人elinorleung认为，中国电子商务的利润压力比美国还高，“几乎没什么人在赚钱”。

The pressure on margins in Chinese e-commerce is worse than in America , reckons Elinor Leung of CLSA , a broker . " Almost no one makes money , " she says .

通过模拟计算压力比、单位容积制冷量和理论循环制冷系数等性能指标，对比评价HCFC－123和CFC－11两种制冷工质。

A comparative assessment between HCFC-123 and CFC-11 , the two kind of refrigerants , has been carried out by simulation calculating the theoretical cycle performance indexs including pressure ratio , volumetric refrigerating capacity and coefficient of performance in this paper .

承受的压力比大气压力大的空气。

Air at a pressure greater than that of the atmosphere .

安全阀临界压力比研究

Research on the critical pressure ratio for safety valve

对水力喷射泵无量纲压力比计算公式的讨论

Discussion on the formulas for calculating the dimensionless pressure ratio of jet pumps

那容器里面的压力比它外面的要低得多。

The pressure inside the container is much lower than that outside the container .

在一定范围内升力随喷流的压力比升高而升高；

Pressure ; Jet can increase the lift of airfoil within some range of NPR ;

在相同通量条件下，纳滤膜所要求的驱动压力比反渗透膜要低得多。

In the same flux , NF requires much lower driver pressure than RO membrane .

多级压缩机压力比与气阀结构参数的优化

The optimization of the pressure ratios and the valves designing parameters of a multi stage compressor

突发的压力比持续的压力更能导致妇女选择将男婴流产。

Acute stress is more likely to cause women to choose aborting boys than chronic stress .

通过分析论证，导出水力喷射泵效率计算中无量纲压力比的正确计算公式，指出文献[1]中无量纲压力比计算公式的错误；

The rational selection of jet pumps is based on correct calculation of the dimensionless pressure ratio .

在接受调查的7400名私营企业主管中，超过半数的人感觉压力比去年更大。

More than half the 7,400 heads of private businesses surveyed feel more stressed than last year .

通过对流场结构的分析表明，改变阀口开度，可以提高阀的音速流导和临界压力比的值；

Flow field indicates conductive value C and the critical pressure ratio b are improved by changing openings .

作用于活塞朝上的压力比朝下的压力大一定值。

The upward pressure on the piston is then greater than the downward pressure by a finite amount .

最后，提出了一种用于联系流量比和压力比的空化系数。

Finally , the chapter poses a cavitation parameter to connect the flow ratio and the pressure ratio .

当前，粮食压力比其它各方面的压力都大。那么，解决方案是什么呢？

The pressures on food are worse than anything else , and therefore , what is the solution ?

确定凝汽式汽轮机末级临界流量与临界压力比的数值方法

The Numerical Method of Determining Critical Flow Rate and Critical Pressure Ratio of Last Stage of Condensing Steam Turbine

这种现象源于大学的学习压力比高中要小得多。

This phenomenon could be because the pressure to study at university is lower than that of high school .

尽管外界对于美国将出现日本式通缩的担忧有些过虑，但通缩压力比通胀更令人不安。

Although worries about Japan-style deflation in the US are overblown , deflationary pressures are more worrisome than inflation .

处理灰砂比1∶3～1∶4.5砂浆试件，其抗渗压力比为200%～250%。

To dispose sand mortar with 1:3 ~ 1:4.5 cement-sand ratio has 200 % ~ 250 % impermeability pressure ratio .